Printing-telegraph.



PATENTED 11110.31, 1907.

F. J. 11.1111. PRINTING TELEGRAPH.

APPLICATION FILED AUG. 30.1906.

I? ederz'ck IIa/iy' E Wag of which t This invention relates to an improvement to 1 the.

60 disks with strips of raensalcx 1. nine, or nnr'rsvrLLa,

MARYLAND.

ruminant-mourn Specification of Letters Patent.

Patented Dec. 51, 1907.

Application filed August 80.1008. Serial I0- 882,678.

To all whom it may concern:

Be it'knewn that I, Faensarox J. Here, a citizen of the United States, residing at Hyattsville, in the county of Prince George and State of Maryland, have invented a new and useful Improvement in Printing-Telegraphs,

e following is a specification.

in printing telegraphs and a'rtrcuiarl that class of printing telegrap in whicli transmitter and receiver closely resemble in structure and in operation the commercial t writing machines. a he objectsof this invention are to simsystem in which it is used and torender the operation thereof accurate and certain.

To that end, the invention consists in the structure and combination of arts substantially as herein set forth and c aimed.

In the accompan drawing which forms a part of this specification, the invention is graphically'represented, many of the parts eing conventionally typified.

This system 0 rates on a code consisting of dashes or impulses of varying lengths, each character being represented by a single impulse. For example A is re resented by an impulse of a certain length, by a longer impulse and C by one still longer, and so on. The transmitter sends these impulses by the simple depression of the respective keys and sen s them over a single circuit to the receiver in which a selector acts to direct each impulse to the respective .key of the t pewriting machine there used to print the 0 aracters in res onse to the transmitter.

At the le t in the drawing, a transmitter having a bank'of keys similar to those of a commercial typewriter is typified bthree key levers, which may he the B an C keys of thgiinstrunlilentk Character wheelsdcornis n 'ng'tot ese e sarere sente at,

2 :nd 3 on shaft 4 and by the aid: of each is a ratchet wheel 5 with which engages a pawl 6 attached to its respective key lever for the rotation of the character wheel. These character wheels may be of any desired construction. They are here re resented as metal msii' iation set into the periphery whereby there are provided one or plify the structure of the receiver and of the 1 more separated contact surfaces for cooperation with suitable brushes or contacts 7. These contact surfaces are of different lengths in the different wheels as seen at 8, 9 and 10 respectively. The character wheels are idle on shaft 4 and current may be conveyed thereto through said shaft as indicated.

At the right in the drawing, is re resented the receiver, the printing ortion 0 which is typified by three levers, t ose of keys A, B and C, for instance, of a commercial typewriter. These levers, or their typehars, are operated, res tively, by magnets indicated at 11,12 an 13. v

The selector is an oscillating one and makes circuit to the desired printing mzgnet during the return stroke. It is controll by a magnet 14'energiaed over line circuit 15- 16 from the source of current indicated by 17 at the transmitter. In the form of selector shown, a ring of contacts as 18, 19, and 20 is provided over which travels a brush or spring contact finger 21. This contact is mounted on a shaft 22 which carries a gear wheel 23 and has a spring 24 for returning the fin er to its initial position against stop 25. 's gear wheel and contact may be set into rotation by any suitable power driven clutch. One form of such clutch is typified, of which the power shaft is indicated at 26 as driven by an electric motor 27. On this shaft is a car 28 in mesh with an idle gear 29 mounte in an arm 30 hinged on the shaft. Connected to the idle gear 29 is a lever 31 which is joined by link 32 to the armature lever 33 of magnet 14. Lever 33, in addition to controlling the clutch, operates also the circuit controller acting in conjunction with the contact finger 21. This controller is represented as consisting of two adjacent adjustable contact plates 34 and 35, from one to the other of which the contact lever 36 passes when m et 14 is energized or deenergized. An osc lating lever 37 transmits motion from armature lever 33 to contact lever 36 and is employed to give the desired amplitude of movement to said contact lever.

The source of current for the printing masnet is indicated at 38 and from it a wire lea s to the bus-wire to which said magnets are connected. From each of these magnets a wire leads to a contact plate of the selector, only three being here shown and they lead to contact plates 18, 19 and 29. From the shaft 22 connection is made with contact 34 while contact 35 is connected directly with battery 38.

Operation of the transmitter is effected by simply de ressing a key, for instance key A, when paw 6 in en agement with ratchet 5, rotates wheel 1 so tIrat one of the contacts 8 will pass under brush 7 and current will flow to the receiver during that interval. Operation of the receiver is effected by this current, which draws down armature lever 33, thereb coupling the constantly operating power 0 utch to the gear 23 and rotating the contact finger 21, against the tension of spring 24 and placing it upon the contact plate 18 in circuit connection with magnet 11 whereby the printing of A is to be effected. The same movement of armature lever 33 throws contact lever 36 across the gap between contact lates 34 and 35 and before contact finger 21 eaves its initial spot of insulation 39. soon as circuit is broken at the transmitter by the passa e of contact 1 from under brush 7, armature lever 33 makes its back stroke and disengages the power clutch, therebly allowing contact finger 21 to start bac under action of spring 24, and also throws contact lever 36 across the gap between plates 34 and 35. In the transition of this lever across said gap the printing circuit is completed, magnet 11 energized and the type controlled thereby operated. If finger 21 as contact plates to ass on its returnfrom that selected, as would be the case with all but the first character, it can not complete any of the other rinting circuits because of the break formed etween lates 34 and 35 by the recession of lever 36 before said finger reaches any other of said contact lates. The initial crossing of said lever is a so completed before finger 21 reaches the first contact plate thereby leaving the circuit open during the passage of the finger to the desired position.

A calling or signaling system of any suitable sort may be used between transmitting and receiving stations. A simple call system is here indicated. A bell or buzzer 40 may be located at each station and each provided with a-switch as 41 and 42.

en a message is to be sent switch 41 which normally stands open is thrown to the bell circuit and current flows through both bells, switch 42 standing normally on the bell circuit. When the operator at the receiver is throwing switch 42 over to the circuit of magnet 14 the transmitter bell stops, then the operator at the transmitter throws switch 41 to line and sends his message as he would operate a type writer. By leaving switch 42 to line a message may be sent without calling the presence of an opswitch in the main circuit of said magnets, and means for closing said switch only during the period that said contact-maker is on the last contact'reached in its advance movement. a

3. In a telegra h receiver, the combination of a circuit selbctor, character actuating magnets connected thereto, a main circuit branching to said magnets, a switch in said main circuit, and means for permitting the selector toreturn to zero and also by the same actuation closing said switch and closing it only during the period that said selector closes the last circuit 'reached by it in its advance movement.

4. In a telegraph receiver, the combination of a contact-maker returnable to zero after each actuation, a series of contacts over which it passes character-actuating magnets, a main circuit branching to said magnets, means for actuating the contact-maker, a motor, means for completing said main circuit only during the period that said arthest contact reached byit, and a magnet controlled from a transmitter for simultaneously coupling the motor to, the contactactuatin means and operating the means for comp eting said main circuit.

5. In a telegra h receiver, the combination of a series 0 character-actuating magnets, a selector for said magnets, a circuit controller in the main line of th circuit containing said magnets, a power clutch, driving said clutch, means for simultaneously engaging the clutch with the selector shaft and for operating the circuit controller.

6. In a telegraph receiver, the combination of printing magnets, a selector for com plating the circuit thereto individually, means or operating the selector, a circuit controller in the mainline of the printing circuit, and means for simultaneously controlling the operation both of the selector and the circuit controller.

connected respectively to contact is returning over the 7. The combination of a series of electro at the selector is closed at the beginning of magnets, a current selector therefor, a circuit the return movement thereof. controller common to said magnets and inde-' In testimony whereof I have signed my pendent of the selector, mechanism for drivname to this specification in the presence of 5 mgntllllle seleiator ffirward, arzldfmeans for contwo subscribing witnesses.

tro g sai mec anism an or maintaining the common circuit open at the controller FREDERICK HAIG' during the forward movement of the selector v Witnesses: I and for actuating: the controller to make and GERTRUDE MANNING, 10 break said common circuit while the circuit E. H. PARKINs. 

